Always use the right tools for the job, in this case Java isn't the right tool.. When you have limited resources to create an application you need every little thing that's available for you. The mobile market supports java just because Apple and Google want to make money off developers more than they want off users so they give you an "easy" language for you to work with.

At the end of the day, use what you are most comfortable with but the games industry is a tricky place to be!